Find the average and uncertainty?

[youngveins]

"5 students time a bowling ball traveling from point A to point B. They record the following times":
2.45s 2.49s 2.58s 2.55s 2.51s

"7 students measure the length of a car. They record the following lengths":
4.5 m , 4.7 m , 4.4 m , 4.6 m , 4.8 m , 4.5 m , 4.6 m

Homework Equations

The Attempt at a Solution

 

[voko]

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